Objective To investigate characteristic of CT findings for peritoneal metastases.Methods The CT manitestations of 48 cases with pathologically proved peritoneal metastases were analysed. Results ①Ascites was seen in 32 cases, to make up 66.7%. ②Changes of omentum were found in 16 cases, to make up 33.3%; In it, cake sign of omentum were in 8 cases, nodular sign of omentum were in 5 cases, cystic sign of omentum were in 2 cases, opacity sign of omentum was in 1 case. ③Changes of mesentery were in 14 cases, to make up 29.2%. ④Thickening of the parieral peritoneurmar were in 12 cases, to make up 25%. ⑤Thickening of small intestine wall and moving of intestine were in 2 cases, to make up 4.2%.Conclusion CT is a valuable method for the diagnosis of peritoneum metastatic tumor.

BACKGROUND:Currently, it is stil controversial about the border, surrounding fascia, space of pelvic cavity, distribution of nerves and lymph nodes of the mesorectum, and the development of new technologies makes a progress in related anatomic research.
OBJECTIVE:To summarize the previous studies so as to describe clearly the progress of mesorectal anatomy and to discuss its clinical value.
METHODS: Using “rectum; mesentery; fascia; space; nerve; lymph node; total mesorectal excision (TME); clinical anatomy” as key words, a computer-based search of PubMed was done for articles related to the mesorectum and surrounding fasciae, space of pelvic cavity, distribution of nerves and lymph nodes.
RESULTS AND CONCLUSION:Fresh or frozen specimens are often used for studying the mesenterium, fascia, nerves and lymph nodes by using traditional pelvic and perineum anatomical methods. Computer-assisted anatomical dissection can combine immunostaining with computer imaging. A three-dimensional model can wel reflect the relationship among the different anatomical structures, as wel as nerve traveling and spatial location. Mesorectum is located behind the denonviliers and in the front of the sacral fascia of the rectum. Pelvic splanchnic nerve of the mesorectum is derived from the anterior sacral nerve root, runs through the presacral fascia, and enters into the neuro-fascial layervia the pesacral space, which is divided into the upper and lower parts according to the peritoneum. There are more folds in the rear of lymph nodes within the mesorectum within and near the peritoneum. There are stil a lot of controversies about anatomical relationship between the mesorectum and surrounding structures, and to elaborate these issues can provide an objective basis for guiding clinical work.

BACKGROUND:The pelvic nerves innervate the pelvic viscera as wel as bring sensory information to the central nerve system, including splanchnic nerves and spinal nerves. Each of them comprises both motor fibers and sensitive fibers. Mostly, the key part of splanchnic plexus is pelvic plexus. Total mesorectal excision proposed by Heald in 1982 has been the “gold standard” for diagnosis and treatment of colorectal cancer. However, it carries a high risk of nerve damage during surgery, which results in urinary retention, sexual dysfunction and other complications. OBJECTIVE:To summarize the former researches so as to get a precise understanding of the pelvic fascia and nerve structure. METHODS:Using “splanchnic nerves, superior hypogastric plexus, pelvic plexus, pelvic splanchnic nerve, total mesorectal excision (TME), clinical anatomy” as key words, a computer-based search of PubMed was done for articles related to the pelvic nerves, including its pathway, consistent, ganglia, and reflection in pelvic viscera, published from 2000 to 2015. RESULTS AND CONCLUSION:The main splanchnic plexus in the pelvic cavity includes superior hypogastric plexus (it is located in the triangle formed by left and right common iliac artery and the sacral promontory), and pelvic plexus (hypogastric nerve, pelvic splanchnic nerve and sacral splanchnic nerve converge at the bottom of rectum, formed pelvic plexus, also known as the inferior hypogastric plexus). It is flattened against the lateral aspect of the rectum, the dorso-lateral bladder wal and the seminal vesicles. Nerves come from the plexus contain the sympathetic nerve, parasympathetic nerve and sensory nerve. They are in charge of the motions and sensations of the pelvic organs. The definite knowledge on the anatomy of pelvic fascia and nerve structures can avoid nerve damage during operation, which can help to improve the life quality of patients.

Disease recurrence is a main challenge in treatment of hepatocellular carcinoma (HCC). There is no generally accepted method for preventing recurrence of HCC after resection.

Objective: To investigate the effects of ticagrelor on cardiorespiratory fitness in patients with coronary heart disease after percutaneous coronary intervention (PCI). Methods: A total of 1 073 patients, who were diagnosed as coronary heart disease and underwent cardiopulmonary exercise testing (CPET) within 1 year after PCI, were enrolled from September 2017 to September 2019 in Peking University Third Hospital, including 309 patients in ticagrelor group and 764 patients in clopidogrel group. Clinical information, blood test results, echocardiographic parameters, cardiorespiratory fitness related parameters (including peak oxygen uptake (VO₂), anaerobic threshold VO₂, peak oxygen pulse (VO₂/HR) and carbon dioxide ventilation equivalent (VE/VCO₂) slope), coronary lesions and intervention information were obtained. Cardiopulmonary fitness related indexes were compared between the two groups, and the correlation between ticagrelor use and cardiopulmonary fitness related indexes was analyzed by multivariate logistic regression. Patients who underwent CPET within 1 month after PCI were included in the subgroup analysis. Results: In ticagrelor group, the age was (60.3±10.3) years, and 253(81.9%) cases were male. The age of clopidogrel group was (60.6±10.0) years, and there were 608(79.6%) males. No significant differences were observed in peak VO₂, anaerobic threshold VO₂, and peak VO₂/HR between the two groups (all P>0.05), but the VE/VCO₂ slope was significantly higher in the ticagrelor group than in the clopidogrel group (30.075 (27.207, 33.603) vs. 28.853 (25.970, 32.336), P<0.001). Logistic regression analysis suggested that the peak VO₂, anaerobic threshold VO₂ and peak VO₂/HR were not significantly correlated with the ticagrelor use (all P>0.05), while the VE/VCO₂ slope was independently correlated with ticagrelor use (OR=1.098, 95%CI 1.032-1.168, P=0.003). Subgroup analysis of patients who underwent CPET within 1 month after PCI also indicated that no significant difference were observed in peak VO₂, anaerobic threshold VO₂, peak VO₂/HR and VE/VCO₂ slope between the two groups (all P>0.05). Logistic regression analysis suggested that the peak VO₂, anaerobic threshold VO₂ and peak VO₂/HR were not significantly correlated with ticagrelor use (all P>0.05), while the VE/VCO₂ slope was significantly correlated with ticagrelor use (OR=1.132, 95%CI 1.030-1.244, P=0.010). Conclusion Among coronary heart disease patients after PCI, treatment with clopidogrel does not result in significant decrease in exercise endurance as compared with patients treated with ticagrelor.